Pneumatically balanced Envoy 2nd stage is light and compact The economical Zeagle Envoy II Octopus is the same internally as the ZX 2nd Stage, but is more compact and lighter because it does not have the adjustment knob or the heat exchanger. The Envoy II Octopus has a venturi control lever that allows the diver to set the octopus 2nd stage in the pre-dive position until needed. Downstream valve Balanced Diaphragm Dive/Pre Dive Venturi Control Weight: .54 lb. (.26 kg) ( w/o hose) Hose Length: 30 in. (.76 m)